/*

 * Metadata values functions

 *

 * Copyright (C) 2012-2024, Joachim Metz <joachim.metz@gmail.com>

 *

 * Refer to AUTHORS for acknowledgements.

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <common.h>

#include <byte_stream.h>

#include <memory.h>

#include <types.h>

#include "libvhdi_debug.h"

#include "libvhdi_definitions.h"

#include "libvhdi_libcerror.h"

#include "libvhdi_libcnotify.h"

#include "libvhdi_libfguid.h"

#include "libvhdi_libuna.h"

#include "libvhdi_metadata_item_identifier.h"

#include "libvhdi_metadata_table.h"

#include "libvhdi_metadata_table_entry.h"

#include "libvhdi_metadata_values.h"

#include "libvhdi_parent_locator.h"

/* Creates metadata values

 * Make sure the value metadata_values is referencing, is set to NULL

 * Returns 1 if successful or -1 on error

 */

int libvhdi_metadata_values_initialize(

     libvhdi_metadata_values_t **metadata_values,

     libcerror_error_t **error )

{

  static char *function = "libvhdi_metadata_values_initialize";

  if( metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata values.",

     function );

    return( -1 );

  }

  if( *metadata_values != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid metadata values value already set.",

     function );

    return( -1 );

  }

  *metadata_values = memory_allocate_structure(

                     libvhdi_metadata_values_t );

  if( *metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create metadata values.",

     function );

    goto on_error;

  }

  if( memory_set(

       *metadata_values,

       0,

       sizeof( libvhdi_metadata_values_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear metadata values.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( *metadata_values != NULL )

  {

    memory_free(

     *metadata_values );

    *metadata_values = NULL;

  }

  return( -1 );

}

/* Frees metadata values

 * Returns 1 if successful or -1 on error

 */

int libvhdi_metadata_values_free(

     libvhdi_metadata_values_t **metadata_values,

     libcerror_error_t **error )

{

  static char *function = "libvhdi_metadata_values_free";

  if( metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata values.",

     function );

    return( -1 );

  }

  if( *metadata_values != NULL )

  {

    if( ( *metadata_values )->parent_filename != NULL )

    {

      memory_free(

       ( *metadata_values )->parent_filename );

    }

    memory_free(

     *metadata_values );

    *metadata_values = NULL;

  }

  return( 1 );

}

/* Reads a parent locator metadata item

 * Returns 1 if successful or -1 on error

 */

int libvhdi_metadata_values_read_parent_locator_item_data(

     libvhdi_metadata_values_t *metadata_values,

     const uint8_t *data,

     size_t data_size,

     libcerror_error_t **error )

{

  libvhdi_parent_locator_t *parent_locator             = NULL;

  libvhdi_parent_locator_entry_t *parent_locator_entry = NULL;

  static char *function                                = "libvhdi_metadata_values_read_parent_locator_item_data";

  int result                                           = 0;

  if( metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata values.",

     function );

    return( -1 );

  }

  if( metadata_values->parent_filename != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid metadata values - parent filename value already set.",

     function );

    return( -1 );

  }

  if( libvhdi_parent_locator_initialize(

       &parent_locator,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create parent locator.",

     function );

    goto on_error;

  }

  if( libvhdi_parent_locator_read_data(

       parent_locator,

       data,

       data_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read parent locator.",

     function );

    goto on_error;

  }

  result = libvhdi_parent_locator_get_entry_by_utf8_key(

            parent_locator,

            (uint8_t *) "parent_linkage",

            14,

            &parent_locator_entry,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve parent linkage entry.",

     function );

    goto on_error;

  }

  else if( result != 0 )

  {

    if( libvhdi_parent_locator_get_value_as_guid(

         parent_locator_entry,

         metadata_values->parent_identifier,

         16,

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_GET_FAILED,

       "%s: unable to retrieve parent linkage value as big-endian GUID.",

       function );

      goto on_error;

    }

  }

  result = libvhdi_parent_locator_get_entry_by_utf8_key(

            parent_locator,

            (uint8_t *) "absolute_win32_path",

            19,

            &parent_locator_entry,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve absolute WIN32 path entry.",

     function );

    goto on_error;

  }

  if( result == 0 )

  {

    result = libvhdi_parent_locator_get_entry_by_utf8_key(

              parent_locator,

              (uint8_t *) "volume_path",

              11,

              &parent_locator_entry,

              error );

    if( result == -1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_GET_FAILED,

       "%s: unable to retrieve volume path entry.",

       function );

      goto on_error;

    }

  }

  if( result == 0 )

  {

    result = libvhdi_parent_locator_get_entry_by_utf8_key(

              parent_locator,

              (uint8_t *) "relative_path",

              12,

              &parent_locator_entry,

              error );

    if( result == -1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_GET_FAILED,

       "%s: unable to retrieve volume path entry.",

       function );

      goto on_error;

    }

  }

  if( result != 0 )

  {

    if( parent_locator_entry == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

       "%s: missing path entry.",

       function );

      goto on_error;

    }

    metadata_values->parent_filename      = parent_locator_entry->value_data;

    metadata_values->parent_filename_size = parent_locator_entry->value_data_size;

    parent_locator_entry->value_data      = NULL;

    parent_locator_entry->value_data_size = 0;

  }

  if( libvhdi_parent_locator_free(

       &parent_locator,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

     "%s: unable to free parent locator.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( parent_locator != NULL )

  {

    libvhdi_parent_locator_free(

     &parent_locator,

     NULL );

  }

  if( metadata_values->parent_filename != NULL )

  {

    memory_free(

     metadata_values->parent_filename );

    metadata_values->parent_filename = NULL;

  }

  metadata_values->parent_filename_size = 0;

  return( -1 );

}

/* Reads a metadata item

 * Returns 1 if successful or -1 on error

 */

int libvhdi_metadata_values_read_item_data(

     libvhdi_metadata_values_t *metadata_values,

     libvhdi_metadata_table_entry_t *metadata_table_entry,

     const uint8_t *data,

     size_t data_size,

     libcerror_error_t **error )

{

  static char *function          = "libvhdi_metadata_values_read_item_data";

  uint32_t file_parameters_flags = 0;

  if( metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata values.",

     function );

    return( -1 );

  }

  if( metadata_table_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata table entry.",

     function );

    return( -1 );

  }

  if( data == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid data.",

     function );

    return( -1 );

  }

  if( ( data_size == 0 )

   || ( data_size > (size_t) SSIZE_MAX ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

     "%s: invalid data size value out of bounds.",

     function );

    return( -1 );

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    if( libvhdi_debug_print_guid_value(

         function,

         "metadata item identifier\t",

         metadata_table_entry->item_identifier,

         16,

         LIBFGUID_ENDIAN_LITTLE,

         LIBFGUID_STRING_FORMAT_FLAG_USE_LOWER_CASE,

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,

       "%s: unable to print GUID value.",

       function );

      goto on_error;

    }

    libcnotify_printf(

     "%s: metadata item description\t: %s\n",

     function,

     libvhdi_metadata_item_identifier_get_description(

      metadata_table_entry->item_identifier ) );

    libcnotify_printf(

     "%s: metadata item data:\n",

     function );

    libcnotify_print_data(

     data,

     (size_t) metadata_table_entry->item_size,

     LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );

  }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  if( memory_compare(

       metadata_table_entry->item_identifier,

       libvhdi_metadata_item_identifier_file_parameters,

       16 ) == 0 )

  {

    if( metadata_table_entry->item_size != 8 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported file parameters size item data size.",

       function );

      goto on_error;

    }

    byte_stream_copy_to_uint32_little_endian(

     data,

     metadata_values->block_size );

    byte_stream_copy_to_uint32_little_endian(

     &( data[ 4 ] ),

     file_parameters_flags );

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      libcnotify_printf(

       "%s: block size\t\t\t: %" PRIu32 "\n",

       function,

       metadata_values->block_size );

      libcnotify_printf(

       "%s: flags\t\t\t\t: 0x%08" PRIx32 "\n",

       function,

       file_parameters_flags );

    }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

    if( ( metadata_values->block_size < ( 1024 * 1024 ) )

     || ( metadata_values->block_size > ( 256 * 1024 * 1024 ) ) )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

       "%s: invalid block size value out of bounds.",

       function );

      goto on_error;

    }

/* TODO check if block size is power of 2 */

    if( ( metadata_values->block_size % 512 ) != 0 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported block size: %" PRIu32 ".",

       function,

       metadata_values->block_size );

      goto on_error;

    }

    file_parameters_flags &= 0x00000003UL;

    switch( file_parameters_flags )

    {

      case 0:

        metadata_values->disk_type = LIBVHDI_DISK_TYPE_DYNAMIC;

        break;

      case 1:

        metadata_values->disk_type = LIBVHDI_DISK_TYPE_FIXED;

        break;

      case 2:

        metadata_values->disk_type = LIBVHDI_DISK_TYPE_DIFFERENTIAL;

        break;

      default:

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

         "%s: unsupported file parameters flags: 0x%02" PRIx32 ".",

         function,

         file_parameters_flags );

        goto on_error;

    }

  }

  else if( memory_compare(

            metadata_table_entry->item_identifier,

            libvhdi_metadata_item_identifier_logical_sector_size,

            16 ) == 0 )

  {

    if( metadata_table_entry->item_size != 4 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported logical sector size item data size.",

       function );

      goto on_error;

    }

    byte_stream_copy_to_uint32_little_endian(

     data,

     metadata_values->logical_sector_size );

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      libcnotify_printf(

       "%s: logical sector size\t\t: %" PRIu32 "\n",

       function,

       metadata_values->logical_sector_size );

    }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

    if( ( metadata_values->logical_sector_size != 512 )

     && ( metadata_values->logical_sector_size != 4096 ) )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

       "%s: invalid logical sector size value out of bounds.",

       function );

      goto on_error;

    }

  }

  else if( memory_compare(

            metadata_table_entry->item_identifier,

            libvhdi_metadata_item_identifier_parent_locator,

            16 ) == 0 )

  {

    if( libvhdi_metadata_values_read_parent_locator_item_data(

         metadata_values,

         data,

         (size_t) metadata_table_entry->item_size,

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_IO,

       LIBCERROR_IO_ERROR_READ_FAILED,

       "%s: unable to read parent locator metadata item.",

       function );

      goto on_error;

    }

  }

  else if( memory_compare(

            metadata_table_entry->item_identifier,

            libvhdi_metadata_item_identifier_physical_sector_size,

            16 ) == 0 )

  {

    if( metadata_table_entry->item_size != 4 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported physical sector size item data size.",

       function );

      goto on_error;

    }

    byte_stream_copy_to_uint32_little_endian(

     data,

     metadata_values->physical_sector_size );

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      libcnotify_printf(

       "%s: physical sector size\t\t: %" PRIu32 "\n",

       function,

       metadata_values->physical_sector_size );

    }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

    if( ( metadata_values->physical_sector_size != 512 )

     && ( metadata_values->physical_sector_size != 4096 ) )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

       "%s: invalid physical sector size value out of bounds.",

       function );

      goto on_error;

    }

  }

  else if( memory_compare(

            metadata_table_entry->item_identifier,

            libvhdi_metadata_item_identifier_virtual_disk_identifier,

            16 ) == 0 )

  {

    if( metadata_table_entry->item_size != 16 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported virtual disk identifier item data size.",

       function );

      goto on_error;

    }

    metadata_values->virtual_disk_identifier[ 0 ] = data[ 3 ];

    metadata_values->virtual_disk_identifier[ 1 ] = data[ 2 ];

    metadata_values->virtual_disk_identifier[ 2 ] = data[ 1 ];

    metadata_values->virtual_disk_identifier[ 3 ] = data[ 0 ];

    metadata_values->virtual_disk_identifier[ 4 ] = data[ 5 ];

    metadata_values->virtual_disk_identifier[ 5 ] = data[ 4 ];

    metadata_values->virtual_disk_identifier[ 6 ] = data[ 7 ];

    metadata_values->virtual_disk_identifier[ 7 ] = data[ 6 ];

    if( memory_copy(

         &( metadata_values->virtual_disk_identifier[ 8 ] ),

         &( data[ 8 ] ),

         8 ) == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_COPY_FAILED,

       "%s: unable to copy virtual disk identifier.",

       function );

      goto on_error;

    }

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      if( libvhdi_debug_print_guid_value(

           function,

           "virtual disk identifier\t\t",

           metadata_values->virtual_disk_identifier,

           16,

           LIBFGUID_ENDIAN_BIG,

           LIBFGUID_STRING_FORMAT_FLAG_USE_LOWER_CASE,

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,

         "%s: unable to print GUID value.",

         function );

        goto on_error;

      }

    }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  }

  else if( memory_compare(

            metadata_table_entry->item_identifier,

            libvhdi_metadata_item_identifier_virtual_disk_size,

            16 ) == 0 )

  {

    if( metadata_table_entry->item_size != 8 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported virtual disk size item data size.",

       function );

      goto on_error;

    }

    byte_stream_copy_to_uint64_little_endian(

     data,

     metadata_values->virtual_disk_size );

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      libcnotify_printf(

       "%s: virtual disk size\t\t: %" PRIu64 "\n",

       function,

       metadata_values->virtual_disk_size );

    }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "\n" );

  }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  return( 1 );

on_error:

  if( metadata_values->parent_filename != NULL )

  {

    memory_free(

     metadata_values->parent_filename );

    metadata_values->parent_filename = NULL;

  }

  metadata_values->parent_filename_size = 0;

  return( -1 );

}

/* Reads a metadata item

 * Returns 1 if successful or -1 on error

 */

int libvhdi_metadata_values_read_item_file_io_handle(

     libvhdi_metadata_values_t *metadata_values,

     libvhdi_metadata_table_entry_t *metadata_table_entry,

     libbfio_handle_t *file_io_handle,

     off64_t metadata_region_offset,

     libcerror_error_t **error )

{

  uint8_t *data                = NULL;

  static char *function        = "libvhdi_metadata_values_read_item_file_io_handle";

  ssize_t read_count           = 0;

  off64_t metadata_item_offset = 0;

  if( metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata values.",

     function );

    return( -1 );

  }

  if( metadata_table_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata table entry.",

     function );

    return( -1 );

  }

  metadata_item_offset = metadata_region_offset + metadata_table_entry->item_offset;

  if( ( metadata_table_entry->item_size == 0 )

   || ( metadata_table_entry->item_size > MEMORY_MAXIMUM_ALLOCATION_SIZE ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

     "%s: invalid metadate table entry - item data size value out of bounds.",

     function );

    goto on_error;

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "%s: reading metadata item at offset: %" PRIi64 " (0x%08" PRIx64 ").\n",

     function,

     metadata_item_offset,

     metadata_item_offset );

  }

#endif

  data = (uint8_t *) memory_allocate(

                      sizeof( uint8_t ) * metadata_table_entry->item_size );

  if( data == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create metadata item data.",

     function );

    goto on_error;

  }

  read_count = libbfio_handle_read_buffer_at_offset(

                file_io_handle,

                data,

                (size_t) metadata_table_entry->item_size,

                metadata_item_offset,

                error );

  if( read_count != (ssize_t) (size_t) metadata_table_entry->item_size )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read metadata item data at offset: %" PRIi64 " (0x%08" PRIx64 ").",

     function,

     metadata_item_offset,

     metadata_item_offset );

    goto on_error;

  }

  if( libvhdi_metadata_values_read_item_data(

       metadata_values,

       metadata_table_entry,

       data,

       (size_t) metadata_table_entry->item_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read metadata item.",

     function );

    goto on_error;

  }

  memory_free(

   data );

  return( 1 );

on_error:

  if( data != NULL )

  {

    memory_free(

     data );

  }

  return( -1 );

}

/* Reads the metadata values

 * Returns 1 if successful or -1 on error

 */

int libvhdi_metadata_values_read_file_io_handle(

     libvhdi_metadata_values_t *metadata_values,

     libbfio_handle_t *file_io_handle,

     off64_t metadata_region_offset,

     libcerror_error_t **error )

{

  libvhdi_metadata_table_t *metadata_table = NULL;

  libvhdi_metadata_table_entry_t *entry    = NULL;

  static char *function                    = "libvhdi_metadata_values_read_file_io_handle";

  int entry_index                          = 0;

  int number_of_entries                    = 0;

  if( metadata_values == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid metadata values.",

     function );

    return( -1 );

  }

  if( libvhdi_metadata_table_initialize(

       &metadata_table,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create metadata table.",

     function );

    goto on_error;

  }

  if( libvhdi_metadata_table_read_file_io_handle(

       metadata_table,

       file_io_handle,

       metadata_region_offset,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read metadata table.",

     function );

    goto on_error;

  }

  if( libvhdi_metadata_table_get_number_of_entries(

       metadata_table,

       &number_of_entries,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve number of entries from metadata table.",

     function );

    goto on_error;

  }

  for( entry_index = 0;

       entry_index < number_of_entries;

       entry_index++ )

  {

    if( libvhdi_metadata_table_get_entry_by_index(

         metadata_table,

         entry_index,

         &entry,

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_GET_FAILED,

       "%s: unable to retrieve entry: %d from metadata table.",

       function,

       entry_index );

      goto on_error;

    }

    if( entry == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

       "%s: missing entry: %d.",

       function,

       entry_index );

      goto on_error;

    }

    if( libvhdi_metadata_values_read_item_file_io_handle(